A Lagrangian Integration Point Finite Element Method for Large Deformation Modeling of Viscoelastic Geomaterials

Moresi, Louis N., Dufour, Frederic and Muhlhaus, Hans (2003) A Lagrangian Integration Point Finite Element Method for Large Deformation Modeling of Viscoelastic Geomaterials. Journal Of Computational Physics, 184 2: 476-497.

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Author Moresi, Louis N.
Dufour, Frederic
Muhlhaus, Hans
Title A Lagrangian Integration Point Finite Element Method for Large Deformation Modeling of Viscoelastic Geomaterials
Journal name Journal Of Computational Physics   Check publisher's open access policy
ISSN 0021-9991
Publication date 2003-01-01
Sub-type Article (original research)
DOI 10.1016/S0021-9991(02)00031-1
Volume 184
Issue 2
Start page 476
End page 497
Total pages 24
Place of publication San Diego
Publisher Elsevier Science
Collection year 2003
Language eng
Subject 260200 Geophysics
280210 Simulation and Modelling
280406 Mathematical Software
280404 Numerical Analysis
290704 Geomechanics
230116 Numerical Analysis
290800 Civil Engineering
260109 Geochronology
230107 Differential, Difference and Integral Equations
Abstract We review the methods available for large deformation simulations of geomaterials before presenting a Lagrangian integration point finite element method designed specifically to tackle this problem. In our ELLIPSIS code, the problem domain is represented by an Eulerian mesh and an embedded set of Lagrangian integration points or particles. Unknown variables are computed at the mesh nodes and the Lagrangian particles carry history variables during the deformation process. This method is ideally suited to model fluidlike behavior of continuum solids which are frequently encountered in geological contexts. We present benchmark examples taken from the geomechanics area.
Keyword finite element method
visco-elastic
plasticity
large deformations
moving integration points
particle in cell
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Additional Notes Citation: L. Moresi, F. Dufour and H.-B. Muhlhaus (2003) A Lagrangian integration point finite element method for large deformation modeling of viscoelastic geomaterials, Journal Of Computational Physics, 184 (2) : 476-497. doi:10.1016/S0021-9991(02)00031-1 Copyright 2003 Academic Press. All rights reserved. Single copies only may be downloaded and printed for a user's personal research and study.

 
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Created: Fri, 24 Mar 2006, 10:00:00 EST by Hans-Bernd Muhlhaus on behalf of Earth Systems Science Computational Centre